Overpopulation is an undesirable condition where the number of existing human population exceeds the carrying capacity of Earth. Overpopulation is caused by number of factors. Reduced mortality rate, better medical facilities, depletion of precious resources are few of the causes which result in overpopulation. Growing advances in technology with each coming year has affected humanity in many ways. One of these has been the ability to save lives and create better medical treatment for all. A direct result of this has been increased lifespan and the growth of the population. In the past fifty or so years, the growth of the population has boomed and has turned into overpopulation. In the history of our species, the birth and death rate have always been able to balance each and maintain a population growth rate that is sustainable. Câu 21. What does the word “depletion” probably mean? A. The process of taking an amount of something. B. The process of using information you have. C. A rise in the amount, number or value of something. D. The reduction of something by a large amount so that there is not enough left. Câu 22. In the history, the birth and death rate have always been able to _____. A. balance B. increase C. decrease D. maintain Câu 23. What helps save more lives and create better medical treatment for all? A. Enhanced curing methods B. Advances in technology C. New medicine D. Modern life Câu 24. What does the passage mainly discuss? A. Effects of overpopulation B. How to reduce overpopulation C. How to control overpopulation D. Causes of overpopulation Câu 25. Which of the following is NOT mentioned as a factor causing overpopulation? A. Reduced mortality rate B. Better medical facilities C. Tasty and nutritious food D. Depletion of precious resources Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks. Few people now question the reality of global warming and its effects on the world’s climate. Many scientists put the blame for recent disasters on the increase (26) _____ the world’s temperatures and are convinced that, more than ever before, the Earth is at risk from the forces of the wind, rain, and sun. (27) _____to them, global warming is making extreme weather events, (28) _____ as hurricanes and droughts, even more severe and causing sea levels all around the world to rise. Environmental groups are putting pressure on governments to take actions to reduce the (29) _____ of carbon dioxide which is given off by factories and power plants, thus attacking the problem at its source. They are in favor of more money being spent on research into solar, wind and wave energy devices, which could then replace existing power stations. Some scientists, (30) _____, believe that even if we stopped releasing carbon dioxide and other gases into the atmosphere tomorrow, we should have to wait several hundred years to notice the result. Câu 26. A. at B. in C. by D. to Câu 27. A. Concerning B. Depending C. Regarding D. According Câu 28. A. well B. such C. even D. just Câu 29. A. amount B. number C. plenty D. deal Câu 30. A. really B. despite C. therefore D. however